Control devices for controlling the position of a marine seismic streamer

- WESTERNGECO, L.L.C.

A control device or “bird” for controlling the position of a marine seismic streamer is provided with an elongate, partly flexible body which is designed to be electrically and mechanically connected in series with a streamer. In its preferred form, the bird has two opposed wings which are independently controllable in order to control the streamer's lateral position as well as its depth.

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Description

This application is a continuation of Ser. No. 10/704,182, filed Nov. 7, 2003 (now U.S. Pat. No. 7,822,552), from which Applicant claims priority under 35 U.S.C. §120. Ser. No. 10/704,182 was a divisional of Ser. No. 09/893,234, filed Jun. 26, 2001 (now U.S. Pat. No. 6,671,223), which was a continuation of Ser. No. 09/284,030, filed Apr. 6, 1999 (abandoned), which was a 35 U.S.C. §371 national stage filing from Patent Cooperation Treaty application number PCT/GB97/03507, filed Dec. 19, 1997, which in turn claimed priority from Great Britain patent application number 9626442.9, filed Dec. 20, 1996, from which Applicant has claimed foreign priority under 35 U.S.C. §119.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to control devices for controlling the position of a marine seismic streamer.

2. Description of the Prior Art

A marine seismic streamer is an elongate cable-like structure, typically up to several thousand meters long, which contains arrays of hydrophones and associated electronic equipment along its length, and which is used in marine seismic surveying. In order to perform a 3D marine seismic survey, a plurality of such streamers are towed at about 5 knots behind a seismic survey vessel, which also tows one or more seismic sources, typically air guns. Acoustic signals produced by the seismic sources are directed down through the water into the earth beneath, where they are reflected from the various strata. The reflected signals are received by the hydrophones, and then digitised and processed to build up a representation of the earth strata in the area being surveyed.

The streamers are typically towed at a constant depth of about ten meters, in order to facilitate the removal of undesired “ghost” reflections from the surface of the water. To keep the streamers at this constant depth, control devices known as “birds”, attached to each streamer at intervals of 200 to 300 meters, are used.

Current designs of birds are battery-powered, and comprise a relatively heavy body which is suspended beneath the streamer, and which has a pair of laterally projecting wings (hence the name “bird”), one on each side. The combination of streamer and birds is arranged to be neutrally buoyant, and the angle of attack of both wings is adjusted in unison from time to time to control the depth of the streamer.

Birds in accordance with these current designs suffer from a number of disadvantages. Because they are battery-powered, the batteries can run out before the survey is completed, necessitating either retrieval of the streamer for battery replacement, or deployment of a work boat to replace the battery in the water. The former operation is very time consuming, while the latter can be hazardous. Further, because the birds hang beneath the streamer, they produce considerable noise as they are towed through the water, which noise interferes with the reflected signals detected by the hydrophones in the streamers. The hanging of the birds from the streamers also means that the birds need to be detached each time the streamer is retrieved and re-attached each time it is re-deployed, which is again rather time consuming.

During the seismic survey, the streamers are intended to remain straight, parallel to each other and equally spaced. However, after deploying the streamers, it is typically necessary for the vessel to cruise in a straight line for at least three streamer lengths before the streamer distribution approximates to this ideal arrangement and survey can begin. This increases the time taken to carry out the survey, and therefore increases the cost of the survey. But because of sea currents, the streamers frequently fail to accurately follow the path of the seismic survey vessel, sometimes deviating from this path by an angle, known as the feathering angle, of up to 10°. This can adversely affect the coverage of the survey, frequently requiring that certain parts of the survey be repeated. In really bad circumstances, the streamers can actually become entangled, which though rare, causes great damage and considerable financial loss. Current designs of birds can do nothing to alleviate any of these lateral streamer positioning problems.

It is therefore an object of the present invention to provide novel streamer control devices which alleviate at least some of the disadvantages of the current designs, and/or which possess more functionality than the current designs.

SUMMARY OF THE INVENTION

According to the present invention, there is provided a control device for controlling the position of a marine seismic streamer, the device comprising a body mechanically connected in series between two adjacent sections of the streamer, sensor means in the body for determining its angular position in a plane perpendicular to the longitudinal axis of the streamer, two opposed control surfaces projecting outwardly from the body, each control surface being rotatable about an axis which in use extends transversely of the streamer, and control means responsive to control signals and the sensor means for independently adjusting the respective angular positions of said two control surfaces so as to control the lateral position of the streamer as well as its depth.

In a preferred embodiment of the invention, for use with a multi-section streamer which includes an electric power line, the control means is at least partly electrical and arranged in use to receive electric power from said electric power line.

When the streamer also includes a control line, the control means is preferably arranged in use to receive control signals from the control line.

The control means preferably includes at least one electrical motor, and may also include means for sensing the respective angular positions of the two control surfaces.

Conveniently, said two control surfaces rotate about a common axis.

Advantageously, each of the two control surfaces comprises a respective wing-like member which is swept back with respect to the direction of tow of the streamer.

Preferably, said control surfaces are releasably secured to the body, which may be adapted to be non-rotatably coupled to the streamer.

BRIEF DESCRIPTION OF DRAWINGS

The invention will now be described, by way of example only, with reference to the accompanying drawings, of which:

FIG. 1 is a somewhat schematic representation of a preferred embodiment of a streamer control device in accordance with the present invention;

FIG. 2 is a simple schematic of a control system forming part of the streamer control device of FIG. 1; and

FIGS. 3 to 5 illustrate the operation of the streamer control device of FIG. 1.

The streamer control device, or “bird”, of FIG. 1 is indicated generally at 10, and comprises an elongate streamlined body 12 adapted to be mechanically and electrically connected in series in a multi-section marine seismic streamer 14 of the kind which is towed by a seismic survey vessel and which is used in, in conjunction with a seismic source also towed by the vessel, to conduct seismic surveys, as briefly described hereinbefore. To permit such connection, each end of the body 12 is provided with a respective mechanical and electrical connector 16, 18, these connectors being complementary to, and designed to interconnect with, streamer and connectors 20, 22 respectively which are normally used to join together adjacent sections 14a and 14b of the streamer 14.

The bird 10 is provided with two opposed control surfaces, or wings, 24, typically moulded from a fibre-reinforced plastics material, which project horizontally outwardly from the body 12 and which are independently rotatable about a common axis extending substantially perpendicularly through the longitudinal axis of the body. Rotation of the wings 24 is effected under the control of a control system 26 sealingly housed within the body 12. The wings 24 are generally ogival (ie rounded) and swept back with respect to the direction of tow of the streamer 14 (which direction is indicated by the arrow 28), in order to reduce the possibility of debris becoming hooked on them. To facilitate their rapid removal and reattachment, the wings 24 are secured to body 12 by a quick-release attachment 30.

As mentioned hereinbefore, the streamer 14 includes hydrophones distributed along its length; it also includes control and conversion circuitry for converting the outputs of the hydrophones into digital data signals, longitudinally extending control and data lines for conducting control and data signals to and from the control and conversion circuitry, and electrical power supply lines for supplying electrical power from the vessel to the circuitry. All these lines are coupled together from the streamer section 14a to the streamer section 14b via respective corresponding lines 32 which extend through the body 12 of the bird 10 between the connectors 16, 18. Additionally, the control system 26 is connected to receive control signals and electric power from respective ones of the lines 32.

The greater part of the length of the body 12 of the bird 10 is flexible, the only rigid parts being the connectors 20, 22, and a short central section which houses the control system 26 and from which the wings 24 project. This central section, which is made of aluminium or titanium and has holes passing longitudinally therethrough for the passage of Kevlar or other stress members which bear the longitudinal loads on the body 12, is kept as short as possible, typically around 40 cm, so that once the wings 24 have been detached from the body 12, the streamer 14 can be wound onto and unwound from the large drum used for storing the streamer, with the body 12 still connected in the streamer. The quick-release attachment 30 permits the removal and attachment of the wings 24 to be at least partly automated as the streamer 14 is reeled in and out during the survey.

The reason for providing the elongate flexible parts of the body 12 is to provide enough length for the inclusion of one or more hydrophones or hydrophone groups, should this be necessary to preserve a desired uniform hydrophone spacing along the length of streamer 14. If no hydrophones need to be included, the flexible parts of the body 12 can be omitted altogether, along with the aforementioned stress members.

The control system 26 is schematically illustrated in FIG. 2, and comprises a microprocessor-based control circuit 34 having respective inputs 35 to 39 to receive control signals representative of desired depth, actual depth, desired lateral position, actual lateral position and roll angle of the bird 10 (ie the angular position of the body 12 in a plane perpendicular to the longitudinal axis of the streamer 14). The desired depth signal can be either a fixed signal corresponding to the aforementioned 10 meters, or an adjustable signal, while the actual depth signal is typically produced by a depth sensor 40 mounted in or on the bird 10. The lateral position signals are typically derived from a position determining system of the kind described in our U.S. Pat. No. 4,992,990 or our International Patent Application No WO 9621163. The roll angle signal is produced by an inclinometer 42 mounted within the bird 10.

The control circuit 34 has two control outputs 44, 46, connected to control respective electrical stepper motors 48, 50, each of which is drivingly connected to a respective one of the wings 24. The stepper motors 48, 50 have respective outputs at which they produce signals representative of the their respective current angular positions (and therefore of the current angular positions of the wings 24), which outputs are connected to respective control inputs 52, 54 of the control circuit 34.

In operation, the control circuit 34 receives between its inputs 35 and 36 a signal indicative of the difference between the actual and desired depths of the bird 10, and receives between its inputs 37 and 38 a signal indicative of the difference between the actual and desired lateral positions of the bird 10. These two difference signals are used by the control circuit 34 to calculate the roll angle of the bird 10 and the respective angular positions of the wings 24 which together will produce the necessary combination of vertical force (upwardly or downwardly) and lateral force (left or right) required to move the bird 10 to the desired depth and lateral position. The control circuit 34 then adjusts each of the wings 24 independently by means of the stepper motors 48, 50 so as to start to achieve the calculated bird roll angle and wing angular positions.

FIGS. 3 to 5 illustrate the operation of the bird 10 in the case where the streamer 14 is slightly heavy (slightly negative buoyancy), and the bird 10 thus needs to produce lift to maintain the streamer at the desired depth. This lift is produced by the flow of the water over the wings 24 of the bird 10, resulting from the 5 knot towing speed of the streamer 14 through the water, and can be changed by changing the angle of attack of the wings with respect to the flow. The magnitude of the lift required for the situation envisaged by FIG. 3 is indicated by the length of the arrows 60.

If the streamer 14 now needs to be moved laterally to the right (as viewed in FIGS. 3 to 5), the angular position of the left wing 24 of the bird 10 is first adjusted to increase its lift, while the angular position of the right wing is adjusted to decrease its lift, as represented by the length of the arrows 64 in FIG. 4, thus causing the bird 10 to roll clockwise from the position shown in FIG. 3 to the position shown in FIG. 4. This clockwise roll continues until the bird 10 reaches the steady state condition shown in FIG. 5, where it can be seen that the vertical component of the lift produced by the wings 24, indicated by the arrows 66, is equal to the lift represented by the arrows 60 of FIG. 3 required to maintain the streamer 14 at the desired depth, while the much larger horizontal component, represented by the arrows 68, moves the streamer 14 to the right.

While adjusting the angular positions of the wings 24 of the bird 10, the control circuit 34 continuously receives signals representative of the actual angular positions of the wings from the stepper motors 48, 50, as well as a signal representative of the actual roll angle of the bird from the inclinometer 42, to enable it to determine when the calculated wing angular positions and bird roll angle have been reached. And as the aforementioned difference signals at the inputs 35 to 38 of the control circuit 34 reduce, the control circuit repeatedly recalculates the progressively changing values of the roll angle of the bird 10 and angular positions of the wings 24 required for the bird and streamer reach the desired depth and lateral position, until the bird and streamer actually reach the desired depth and lateral position.

The body of the bird 10 does not rotate with respect to the streamer 14, and thus twists the streamer as its rolls. The streamer 14 resists this twisting motion, so acting as a kind of torsion spring which tends to return the bird 10 to its normal position (ie with the wings 24 extending horizontally). However, this spring returning action, though beneficial is not essential, and the bird 10 can if desired be designed to rotate to a certain extent with respect to the axis of the streamer 14.

It will be appreciated that the bird 10 has several important advantages with respect to prior art birds. Its in-line connection in the streamer 14 not only reduces the noise it generates as the streamer is towed through the water, but also enables it to derive power and control signals via the streamer and so obiviates the need for batteries (although they may still be provided if desired for back-up purposes). But most importantly, it enables the horizontal or lateral position of the streamer 14 to be controlled, and not just its depth.

Another significant advantage of the bird 10 is that by virtue of the shortness of the stiff parts of the respective body 12 and easily detachable wings 24, it does not need to be removed from the streamer 14 during winding and unwinding. This saves a considerable amount of time when carrying out the seismic survey.

Many modifications can be made to the bird 10. For example, the wings 24 can be staggered slightly along the length of the body 12, in order to provide slightly more room for their respective drive trains. Additionally, the electric motors 48, 50 can be replaced by hydraulic actuators.

Claims

1. A device comprising:

a housing connectable in line between two sections of a marine seismic streamer;
first and second control surfaces that project laterally outward from the housing and that are independently rotatable with respect to each other so that, in a first configuration, an angle of inclination of a lateral surface of each of the first and second control surfaces is different, and, in a second configuration, an angle of inclination of a lateral surface of each of the first and second control surfaces is configured such that a same lift force is applied on each of the control surfaces; and
a control system in the housing responsive to control signals that selectively adjust respective angles of inclination of the lateral surfaces of the first and second control surfaces to have the first configuration, which causes the control surfaces to jointly operate to produce a rolling force on the housing, and the second configuration, which causes the control surfaces to jointly operate to produce a force to adjust lateral position of the streamer without producing a rolling force on the housing.

2. The device of claim 1, wherein the housing is constructed of material selected from aluminum, titanium, and combinations thereof.

3. The device of claim 1, further comprising:

one or more sensors in the housing for determining the angular position of the housing in a plane approximately perpendicular to the longitudinal axis of the streamer,
wherein the control system is responsive to at least one of the sensors.

4. The device of claim 1, wherein the two control surfaces rotate about a common axis.

5. The device of claim 1, wherein the two control surfaces comprise two opposed wings.

6. The device of claim 1, wherein the housing is adapted to be nonrotatably coupled to the streamer.

7. A device, comprising:

a bird connectable to a marine seismic streamer configured to flow through water;
the bird including first and second wings projecting outward from a housing, each of the first and second wings including a wing surface that extends from a leading edge of the respective first and second wings to a trailing edge of the respective first and second wings, the first and second wings being independently rotatable to adjust an angle of attack of the wing surfaces of the first and second wings with respect to a direction of travel of the housing during use; and
a control system that controls rotation of the first and second wings to have a first configuration where the wing surfaces of the first and second wings respectively have different angles of attack of with respect to a direction of travel of the housing that cause the first and second wings to jointly operate to produce a rolling force on the bird, and a second configuration where a same lift force is applied to the wing surfaces of the first and second wings respectively to cause the first and second wings to jointly operate to produce a force on the streamer to control lateral position of the streamer without producing a rolling force on the bird.

8. The device of claim 7, wherein the wings are releasabley secured to the bird.

9. The device of claim 7, the bird comprising a body having a rigid in line housing and a flexible inline portion.

10. The device of claim 9, wherein the body has a diameter approximately the same as a diameter of the streamer.

11. The device of claim 7 comprising a control system including sensors for sensing angular position of each of the two wings.

12. The device of claim 11, wherein the control system further comprises:

a control circuit in communication with one or more sensors for sensing depth, lateral position, and roll angle of the bird.

13. The device of claim 7, wherein the pair of wings are adapted to rotate about a common axis.

14. A method, comprising:

connecting a bird to a marine seismic streamer in series therewith between two sections of the marine seismic streamer; and
individually controlling angular position of first and second control surfaces of the bird to adjust lift of the first and second control surfaces so as to have a first configuration where the first and second control surfaces jointly operate to produce a rolling force on the bird by adjusting an angular position of the first control surface to increase lift of the first control surface, and adjusting an angular position of the second control surface to decrease lift of the first control surface, and a second configuration where a same lift force is applied to the first and second control surfaces such that a force to control lateral position of the marine seismic streamer is provided without producing a rolling force on the bird.

15. The method of claim 14, comprising:

determining position of the bird;
comparing the determined position of the bird to a desired position of the bird; and
rotating the control surfaces according to the comparison.

16. The method of claim 15, wherein the control surfaces comprise two opposed wings.

17. The method of claim 16, wherein the two control surfaces rotate about a common axis.

18. The method of claim 14, further comprising:

measuring the roll angle of the bird using an inclinometer; and
using the measured roll angle in controlling the bird.

19. A streamer control device, comprising:

a body adapted to be mechanically and electrically connected in series between two sections of a multi-section marine seismic streamer;
first and second control surfaces that project laterally outward from the body and that are independently rotatable with respect to each other so that, in a first configuration, an angle of inclination of a lateral surface of each of the first and second control surfaces is different, and, in a second configuration, an angle of inclination of a lateral surface of each of the first and second control surfaces is configured such that a same lift force is applied on each of the surfaces;
an inclinometer mounted within the device to provide a roll angle signal indicating the roll angle of the device;
a control circuit adapted to selectively adjust respective angles of inclination of the lateral surfaces of the first and second control surfaces based on the roll angle signal to individually adjust lift of each control surface so as to provide the first configuration, which causes the control surfaces to jointly operate to produce a rolling force on the body, and the second configuration, which causes the control surfaces to jointly operate to produce a force to control lateral position of the marine seismic streamer without producing a rolling force on the body.

20. The streamer control device of claim 19, wherein the body further comprises:

a flexible, greater part of the body; and
a rigid, lesser part of the body.

21. The streamer of claim 20, wherein the flexible, greater part of the body houses at least one seismic sensor.

22. The streamer of claim 20, wherein the rigid, lesser part of the body houses a control system.

23. The streamer of claim 19, wherein the body houses at least one seismic sensor.

24. The streamer of claim 19, wherein the body houses said control circuit.

25. The streamer of claim 19, wherein the control surfaces are defined by vanes detachable during retrieval without disassembling the streamer.

26. The streamer of claim 19, wherein the control surfaces control the position of the device in both depth and lateral position.

Referenced Cited
U.S. Patent Documents
2632150 March 1953 Silverman et al.
2638176 May 1953 Doolittle
2652550 September 1953 Lash
2729910 January 1956 Fryklund
2928367 March 1960 McCormick
RE25165 May 1962 Pulsifier
3160133 December 1964 Walker
3375800 April 1968 Cole et al.
3412704 November 1968 Buller et al.
3412705 November 1968 Nesson
3434446 March 1969 Cole
3434451 March 1969 Brainard, II
3440992 April 1969 Chance
3531761 September 1970 Clift, Jr. et al.
3531762 September 1970 Tickell et al.
3541989 November 1970 Leonard
3560912 February 1971 Spink et al.
3581273 May 1971 Hedberg
3605674 September 1971 Weese
3611975 October 1971 Ashbrook
3645224 February 1972 Haberman
3648642 March 1972 Fetrow et al.
3757723 September 1973 Pangalila
3774570 November 1973 Pearson
3896756 July 1975 Pearson et al.
3931608 January 6, 1976 Cole
3943483 March 9, 1976 Strange
3953905 May 4, 1976 Paitson
3961303 June 1, 1976 Paitson
4033278 July 5, 1977 Waters
4063213 December 13, 1977 Itria et al.
4087780 May 2, 1978 Itria et al.
4222340 September 16, 1980 Cole
4227479 October 14, 1980 Gertler et al.
4290124 September 15, 1981 Cole
4313392 February 2, 1982 Guenther et al.
4323989 April 6, 1982 Huckabee et al.
4350111 September 21, 1982 Boyce, II
4357777 November 9, 1982 Kulik
4404664 September 13, 1983 Zachariadis
4463701 August 7, 1984 Pickett et al.
4484534 November 27, 1984 Thillaye Du Boullay
4648322 March 10, 1987 Heitz et al.
4676183 June 30, 1987 Conboy
4694435 September 15, 1987 Magneville
4709355 November 24, 1987 Woods et al.
4711194 December 8, 1987 Fowler
4723501 February 9, 1988 Hovden et al.
4729333 March 8, 1988 Kirby
4745583 May 17, 1988 Motal
4766441 August 23, 1988 Phillips et al.
4767183 August 30, 1988 Martin
4769773 September 6, 1988 Shatto, Jr.
4809005 February 28, 1989 Counselman, III
4843996 July 4, 1989 Darche
4890568 January 2, 1990 Dolengowski
4890569 January 2, 1990 Givens
4912682 March 27, 1990 Norton
4912684 March 27, 1990 Fowler
4992990 February 12, 1991 Langeland et al.
5042413 August 27, 1991 Benoit
5050133 September 17, 1991 Buddery
5052814 October 1, 1991 Stubblefield
5148406 September 15, 1992 Brink et al.
5200930 April 6, 1993 Rouguette
5201128 April 13, 1993 Olivier
5284323 February 8, 1994 Pawkett
5353223 October 4, 1994 Norton et al.
5402745 April 4, 1995 Wood
5415523 May 16, 1995 Muller et al.
5443027 August 22, 1995 Owsley et al.
5507243 April 16, 1996 Williams et al.
5517202 May 14, 1996 Patel et al.
5517463 May 14, 1996 Hornbostel et al.
5529011 June 25, 1996 Williams, Jr.
5532975 July 2, 1996 Elholm
5546882 August 20, 1996 Kuche
5619474 April 8, 1997 Kuche
5642330 June 24, 1997 Santopietro
5668775 September 16, 1997 Hatteland
5790472 August 4, 1998 Workman et al.
5927606 July 27, 1999 Patterson
6011752 January 4, 2000 Ambs et al.
6011753 January 4, 2000 Chien
6016286 January 18, 2000 Olivier et al.
6091670 July 18, 2000 Oliver et al.
6142091 November 7, 2000 Henriksen
6144342 November 7, 2000 Bertheas et al.
6276294 August 21, 2001 Geriene et al.
6459653 October 1, 2002 Kuche
6470246 October 22, 2002 Crane et al.
6525992 February 25, 2003 Olivier et al.
6549653 April 15, 2003 Osawa et al.
6606958 August 19, 2003 Bouyoucos
6612886 September 2, 2003 Cole, Jr.
6671223 December 30, 2003 Bittleston
6691038 February 10, 2004 Zajac
6879542 April 12, 2005 Soreau et al.
6932017 August 23, 2005 Hillesund et al.
6985403 January 10, 2006 Nicholson et al.
7080607 July 25, 2006 Hillesund et al.
7092315 August 15, 2006 Olivier
7162967 January 16, 2007 Hillesund et al.
7180607 February 20, 2007 Kyle et al.
7203130 April 10, 2007 Welker
7222579 May 29, 2007 Bittleston et al.
7293520 November 13, 2007 Hillesund et al.
7400552 July 15, 2008 Moldoveanu
7403448 July 22, 2008 Welker et al.
7411863 August 12, 2008 Toennessen
7423929 September 9, 2008 Olivier
7450467 November 11, 2008 Tveide et al.
7499373 March 3, 2009 Toennessen et al.
7660191 February 9, 2010 Robertsson
7701803 April 20, 2010 Welker
7755970 July 13, 2010 Welker et al.
7804738 September 28, 2010 Storteig et al.
7822552 October 26, 2010 Bittleston
20020126575 September 12, 2002 Bittleston
20040196737 October 7, 2004 Nicholson
20050078554 April 14, 2005 Bittleston
20050188908 September 1, 2005 Hillesund et al.
20050209783 September 22, 2005 Bittleston
20060176775 August 10, 2006 Toennessen
20060227657 October 12, 2006 Tveide et al.
20060231006 October 19, 2006 Hillesund et al.
20060231007 October 19, 2006 Hillesund et al.
20060260529 November 23, 2006 Hillesund et al.
20060285434 December 21, 2006 Welker et al.
20070041272 February 22, 2007 Hillesund et al.
20080008032 January 10, 2008 Welker et al.
20080008033 January 10, 2008 Fossum et al.
20080212406 September 4, 2008 Olivier et al.
20080267010 October 30, 2008 Moldoveanu
20080316859 December 25, 2008 Welker et al.
20090092004 April 9, 2009 Toennessen et al.
20090204274 August 13, 2009 Bittleston
20090211509 August 27, 2009 Olivier et al.
20090238035 September 24, 2009 Hillesund et al.
20090279385 November 12, 2009 Hillesund et al.
20100020637 January 28, 2010 Welker et al.
20100027374 February 4, 2010 Moldoveanu
Foreign Patent Documents
734810 July 1998 AU
2270719 July 1998 CA
697 02 673 April 2001 DE
0 193 215 September 1986 EP
0 319 716 June 1989 EP
0 321 705 June 1989 EP
0 525 391 February 1993 EP
0 390 987 December 1993 EP
0 613 025 August 1994 EP
562761 October 1996 EP
0 581 441 August 1997 EP
0562781 November 1997 EP
0 613 025 September 1998 EP
0 909 701 January 2003 EP
1 850 151 August 2011 EP
2744870 February 1996 FR
1345462 January 1974 GB
2093610 September 1982 GB
2122562 January 1984 GB
9626442.9 December 1998 GB
2331971 June 1999 GB
2342081 April 2000 GB
992701 June 1999 NO
20011645 April 2001 NO
WO-95/31735 November 1995 WO
WO-96/21163 July 1996 WO
WO 96/21163 July 1996 WO
WO-97/11395 March 1997 WO
WO-97/30361 August 1997 WO
WO-97/45006 December 1997 WO
WO-98/28636 July 1998 WO
WO-99/04293 January 1999 WO
0020895 April 2000 WO
WO00/20695 April 2000 WO
WO 00/20895 April 2000 WO
WO 01/61380 August 2001 WO
Other references
  • Answer.com, “Modular Design”, pp. 1-3, printed May 24, 2010.
  • Merriam-Webster Online Dictionary, “Position”, pp. 1-3, printed May 24, 2010.
  • Ross, et al., Time-Lapse Seismic Monitoring: Some Shortcomings in Nonuniform Processing, The Leading Edge, Jun. 1997, pp. 1021-1027.
  • Aarre, V., et al., “Innovations in time”, first break vol. 25, Jun. 2007.
  • Bartlett, E., “Streamer Positioning in 3D Marine Seismic”, Geodesi-og Hydrografidagene, Stavanger, Nov. 19 and 20, 1988.
  • Capelle, P, et al., “Intelligent Infill for Cost Effective 3D Seismic Marine Acquisitions”, 71st EAGE Conference & Exhibition (2009).
  • Digicourse, Model 5000 Operation and Maintenance Manual, Rev. B, Nov. 17, 1995.
  • “Expert Answers: Multistreamer/multisource Acquisition”, The Leading Edge, May 2005, pp. 472-476.
  • “ION and PGS Successfully Test DigiFIN Steerable Streamer System”, dated Sep. 24, 2007, downloaded Nov. 11, 2010, from Rigzone.com at http://www.rigzone.com/news/article.asp?a—id=50575.
  • Jubinski, P., “A Test of the Accuracy of a Magnetic Compass-Based Streamer Location System”, Paper No. 4996-MS, Offshore Technology Conference, May 6-9, 1985, Houston, Texas.
  • Lambert, D., et al., “Seismic Acquisition: Marine Seismic Survey Positioning and Control Requirements Evolve”—http://www.pennenergy.com/index/petroleum/display/171321/articles/offshore/volume-63/issue-3/news/seismic-acquistion-marine-seismic-survey-postioning-and-control-requirements-evolve.html.
  • McBarnet, A., “Q Stands for a Big Question”, Offshore Engineer, Aug. 1, 2000.
  • McBarnet, A., “Interpreting Reservoir Talk”, Offshore Engineer, Sep. 4, 2003.
  • McBarnet, A., “Seismic Senses New Market”, Offshore Engineer, Mar. 1, 2004.
  • McBarnet, A., “Hesitation Over 4D Committment”, Offshore Engineer, Oct. 1, 2004.
  • McBarnet, A., “Making a Good Recovery”, Offshore Engineer, Mar. 14, 2005.
  • Musser, J.A., et al., “Streamer Positioning for Advanced 3D and 4D Applications, DigiCOURSE, Marine Imaging”, Aug. 2005.
  • Musser, J., et al., “DigiFIN™—Next Wave of Streamer Control & Positioning”, Ion Geophysical, Inc. (2007).
  • Naylor, R., “Positioning Requirements for Complex Multi-Vessel Seismic Acquisition”, GECO Geophysical Co., Ltd, (1990).
  • Ross, R., et al., “Time-lapse helps site new Ekofisk wells”, Tech Watch E&P Jul. 2009.
  • Schlumberger, “Q-Marine*Takes 4D Seismic to Next Level”, Schlumberger Press Release, RealTime News, Aug. 6, 2000.
  • Schlumberger, “WesternGeco Awarded Contract for Three Q Surveys”, Schlumberger Press Release, RealTime News, Apr. 29, 2003.
  • Schlumberger, “WesternGeco Performs Q-Marine 4D Baseline Survey for Statoil”, Schlumberger Press Release, RealTime News, Aug. 12, 2003.
  • Schlumberger, “Hydro Selects WesternGeco for North Sea Q-Marine Survey”, Schlumberger Press Release, RealTime News, Apr. 29, 2004.
  • Schlumberger, “Statoil ASA Awards WesternGeco Q-Marine Survey in North Sea”, Schlumberger Press Release, RealTime News, Jun. 1, 2004.
  • Schlumberger, “WesternGeco Completes First Q-Marine Survey in Danish Sector of North Sea”, Schlumberger Press Release, RealTime News, Jun. 8, 2004.
  • Schlumberger, “Statoil Awards WesternGeco Q-Marine 4D Projects in Norway”, Schlumberger Press Release, Realtime News, Jun. 30, 2004.
  • Schlumberger, “Statoil and WesternGeco Establish Industry's First Long-Term Reservoir Monitoring Program”, Schlumberger Press Release, RealTime News, Aug. 25, 2004.
  • Schlumberger, “WesternGeco to Launch Fifth Q-Marine Seismic Vessel”, Schlumberger Press Release, RealTime News, Oct. 8, 2004.
  • Schlumberger, “Petrobras Awards WesternGeco World's Largest 4D Seismic Project”, Schlumberger Press Release, RealTime News, Nov. 11, 2004.
  • Schlumberger, “All Things Being Equal: Q on Q Seismic”, Schlumberger, 2005.
  • Tang, M., et al., “Lessons through time in 4D seismic”, first break vol. 25, Dec. 2007.
  • Kelland, N.C., Developments in Integrated Underwater Acoustic Positioning, The Hydrographic Journal, No. 71, Jan. 1994, pp. 19-27.
  • Christie, P., et al., “Raising the Standards of Sesmic Data Quality”, OILFIELD REVIEW, Summer 2001, pp. 16-31.
  • Digicourse History, http://www.iongeo.com/ About—Us/Business—Units—and—Subsidiaries/DigiCOURSE/History, 2010.
  • Lambert, D., et al., “Seismic Acquisition: Marine Seismic Survey Positioning and Control Requirements Evolve”—http://www.pennenergy.com/index/petroleum/display/171321/articles/offshore/volume-63/issue-3/news/seismic-acquisition-marine-seismic-survey-positioning-and-control-requirements-evolve.html, downloaded from http://www.offshore-mag.com/index/article-display/171321/articles/offshore/volume-63/issue-3/news/seismic-acquisiton-marine-seismic-survey-positioning-and-control-requirements-evolve.html, published Mar. 3, 2001.
  • Larsen, Leif, “North Sea Operators Provide Feedack on New Marine Seismic System”, WORLD OIL, Jul. 2002, pp. 43-46, downloaded from http://www.worldoil.com/July-2002-North-Sea-operators-provide-feedback-on-new-marine-seismic-system.html.
  • “Q-Technology—moving into the mainstream”, The Journal of Offshore Technology, Jul./Aug. 2003, pp. 9-10, 12.
  • C34 “Seeing Below the Surface”, Shell E&P Technology, May 2002, pp. 26-27.
  • Eiken, et al., “A proven method for acquiring highly repeatable towed streamer seismic data”, Geophysics, vol. 68, No. 4, Jul.-Aug. 2003, pp. 1303-1309.
  • Intemational Preliminary Examination Report for corresponding International App No. PCT/GB97103507, Feb. 3, 1999, 6 pages.
  • International Search Report for corresponding International App No. PCT/GB97/03507, Apr. 15, 1998, 3 pages.
  • Petition for Inter Partes Review of U.S. Pat. No. 6,691,038 Under 35 U.S.C. §§311-319 and 37 C.F.R. §§42.1-.80, 42.100-.123, Petroleum Geo-Services Inc. v. WesternGeco LLC, Case IPR2014-00678 (Apr. 23, 2014).
  • Morice et al., “4D-Ready Marine Seismic Data,” 70th Annual International Meeting, SEG Expanded Abstracts, 1607-1614 (2000).
  • Bittleston et al., “Marine Seismic Cable Steering and Control,” EAGE 62nd Conference and Technical Exhibition, Glasgow, Scotland (May 29-Jun. 2, 2000).
  • Q-Marine Press Release, “Schlumberger Q-Marine Takes 4D Seismic to Next Level” (Aug. 7, 2000).
  • Barry et al., “Recommended Standards for Digital Tape Formats,” Geophysics, 40 SEG-Y Publications 2, pp. 344-352, (1975).
  • Oyvind Hillesund Deposition Transcript (Excerpt) in re: WesternGeco L.L.C. v. Ion Geophysical Corporation, Civil Action No. 4:09-CV-01827 (Aug. 7, 2012).
  • Simon Bittleston Trial Transcript (Excer in re: WesternGeco L.L.C. v. Ion Geophysical Corporation, Civil Action No. 4:09-CV-01827 (Jul. 24, 2012).
  • WesternGeco's Sur-Reply to Ion's Motion for a New Trial on invalidity Under 35 U.S.C. §§ 102 and 103 in re: WesternGeco L.L.C. v. Ion Geophysical Corporation, Civil Action No. 4:09-CV-01827 (Nov. 15, 2012).
  • Memorandum and Order (excerpt) in re: WesternGeco L.L.C. v. Ion Geophysical Corporation, Civil Action No. 4:09-CV-01827 (Jun. 19. 2013).
  • Memorandum and Order in re: WesternGeco L.L.C. v. Ion Geophysical Corporation, Civil Action No. 4:09-CV-01827 (Jul. 16, 2010).
  • Evans, “A Handbook for Seismic Data Acquisition in Exploration,” 7 Geophysical Monograph Series, Society of Exploration Geophysicists, pgs. 9, 149-151 (1977).
  • Society of Exploration Geophysicists 75th Anniversary, Virgil Kauffman Gold Medal Press Release, pp. 25-27 (Nov. 6, 2005).
  • Canter et al , “Evolution of Positioning in Marine 3-D Seismic,” Seismic Acquisition 1:3-D Acquisition, pp. 606-609, SEG Expanded Abstracts (1984).
  • Allen et al., “Centralized Marine Control System,” SEG Annual Meeting, pp. 643-644 (Nov. 2-6, 1986).
  • Gikas et al., “A Rigorous and integrated Approach to Hydrophone and Source Positioning Dung Multi-Streamer Offshore Seismic Exploration,” The Hydrographic Journal 77, pp. 11-24 (Jul. 1995).
  • Marsh et al., “The Use of 4D Seismic in Reservoir Management,” EAGE 63rd Conference & Technical Exhibition, Amsterdam, 'The Netherlands (Jun. 11-15, 2001).
  • Johnston et al., “Time-Lapse Seismic Analysis of the North Sea Fulmar Field,” Reservoir Characterization 4: 4-D Seismology Case Studies, pp. 890-893, SEG Extended Abstracts (1997).
  • Hartung et at, Successful Introduction of New 4D Technology Into the Business—Time Lapse Seismic in Gannet-C, EAGE 62nd Conference and Technical Exhibition, Glasgow, Scotland (2000).
  • WesternGeco's Opposition to Ion's Motion for a New Trial on Invalidity Under 35 U.S.C. §§ 102 and 103 (D.I. 550) (excerpt), Civil Action No. 4:09-CV-01827 (Oct. 26, 2012).
  • Patent Owner Preliminary Response, Case IPR2014-00678 (Sep. 16, 2014).
  • Decision Denying Institution of Inter Partes Review, Case IPR2014-00678 (Dec. 15, 2014).
  • Petition for Inter Partes Review of U.S. Pat. No. 7,162,967 Under 35 U.S.C. §§ 311-319 and 37 C.F.R. §§ 42.1-.80, 42.100-.123, Petroleum Geo-Services Inc. v. WesternGeco LLC (Apr. 23, 2014).
  • Final Written Decision 35 U.S.C. § 318(a) and 37 C.F.R. § 42.73, Case IPR2014-00687 (Dec. 15, 2015).
  • Record of Oral Haring Held Jul. 30, 2015, IPR2014-00687, IPR2014-00688, IPR2014-00689 (Oct. 26, 2015).
  • Petition Petroleum Geo-Services Inc.'s Reply, Case IPR2014-00687 (Jun. 18, 2015).
  • Patent Owner Response, Case IPR2014-00687 (Mar. 20, 2015).
  • Decision on Institution of Inter Partes Review 37 C.F.R § 42.108, Case IPR2014-00687 (Dec. 15, 2014).
  • Petition for Inter Partes Review of U.S. Pat. No. 7,162,967 Under 35 U.S.C. §§ 311-319 and 37 C.F.R. §§ 42.1-.80, 42.100-.123 (Apr. 23, 2014).
  • Patent Owner Preliminary Response, Case IPR2014-00687 (Sep. 16, 2014).
  • Declaration of Dr. Brian Evans, PhD., U.S. Pat. No. 7,162,967 B2 (Apr. 17, 2014).
  • Declaration of Dr. Jack H. Cole, PhD. (Apr. 22, 2014).
  • Order on Post-Trial Motions in re: WesternGeco LLC v. Ion Geophysical Corporation, Civil Action No. 4:09-CV-01827, DE 120 (Jun. 19, 2013).
  • Order on Claim Construction in re: WesternGeco LLC v. Ion Geophysical Corporation, Civil Action No. 4:09-CV-01827, DE 120 (Jul. 16, 2010.
  • Trail Transcript vol. 5 in re: WesternGegco LLC v. Ion Geophysical Corporation, Civil Action No. 4:0J-CV-01827, DE 449 (Jul. 27, 2012).
  • Dorf et al., “Modern Control Systems,” 8th Edition (1998).
  • Bennett, “A Brief History of Automatic Control,” Institute of Electrical and Electronics Engineers Control System Magazine, pp. 17-25 (Jun. 1996).
  • Astrom at al., “Computer-Controlled Systems,” Theory and Design, Third Edition (1997).
  • Evans, “A Handbook for Seismic Data Acquisition in Exploration,” 7 Geophysical Monograph Series, Society of Exploration Geophysicists (1977).
  • Jones, Marine Geophysics (1999).
  • Cotton et al., “The Reality of Trace Binning in 3-D Marine Surveying” (1983).
  • Biondi, “3D Seismic Imaging,” Investigations in Geophysics 14 (2006).
  • Liner, “Elements of 3-D Seismology” (1999).
  • Gardner, “Effects of Irregular Sampling on 3-D Prestack Migration,” SEG Abstracts, pp. 1553-1556 (1994).
  • Liner et al., “'Bin Size and Linear v(z),” Society of Exploration Geophysics Technical Program Expanded Abstracts (1996).
  • Petroleum Geo-Services, “Towed Streamer Seismic-More Efficiency,” http://www.pgs.com/en/geophysical-services/towed-streamer-seismic/more-efficiency/ (Apr. 22, 2014).
  • Westerngeco's Reply Claim Construction Brief, in re WesternGeco L.L.C. v. Ion Geophysical Corporation, Civil Action No. 4:09-CV-01827, pp. 3-4 (Mar. 12, 2010).
  • Astrom at al., “Computer-Controlled Systems Theory and Design,” (1984).
  • Brice et al., “Perturbations in 4D Marine Seismic,” ASEG 15, Geophysical Conference and Exhibition, (Aug. 2001).
  • Martin at at, “Acquisition of Marine Point Receiver Seismic Data with a Towed Streamer,” SEG Expanded Abstracts (2000).
  • McBarnet, “Moving up the Q” G&G Notebook, Offshore Engineer (Jun. 2008).
  • Certified Priority Document, “Seismic Data Acquisition Equipment Control,” PCT/IB99/01590 (Oct. 7 1999).
  • Summons to Attend Oral Proceedings Pursuant to Rule 115(1) EPC issued in Application No. 07113031.4 (Apr. 9, 2014).
  • Loweth, “Manual of Offshore Surveying for Geoscientists and Engineers,” (1997).
  • Smith, “It's all Acquisition's Fault,” The Shale Gale, Hartenergy E&P (Mar. 2011).
  • Transcript of Michael S. Triantafyllou, Petroleum Geo-Services Inc. v. Westerngeco LLC (May 22, 2015).
  • Transcript of Michael S. Triantafyllou, Petroleum Geo-Services Inc. v. Westerngeco LLC (May 23, 2015).
  • Interlocutory Decision in Opposition Proceedings (Art. 101(3)(a) and 106(2) EPC) issued in European Application No. 07 113 031.4 (Oct. 9, 2014).
  • Ion's Renewed Motion for Judgment as a Matter of Law and Alternative Motion for New Trial Regarding Non-infringement, Westerngeco LLC v. Ion Geophysical Corporation et al., Civil Action No. 4:09-cv-01827 (Sep. 8, 2012).
  • Westerngeco's Opposition to Ion's Renewed Motion for Judgment as a Matter of Law and Alternative Motion for New Trial Regarding Non-Infringement (D.I. 556), Civil Action No. 4:09-CV-01827 (Oct. 26, 202).
  • Westerngeco's Reply Claim Construction Brief, Civil Action No. 4:09-CV-01827, (Mar. 12, 2010).
  • First Amended Complaint, Demand for Jury Trial, Civil Action No. 14-CV-03113 (Jan. 23, 2015).
  • WesternGeco Seismic Holdings Limited, Observations of the Patentees in Preparation for Oral Proceedings re European Patent No. 1850151 (Aug. 18, 2014).
  • Deposition of Brian Evans, Ph.D., vol. I, IPR 2014-00687, -00688, -00689, (Feb. 5, 2015).
  • Deposition of Brian Evans, Ph.D., vol. II , IPR 2014-00687, -00688, -00689, (Feb. 6, 2015).
  • Deposition of Jack Cole, Ph.D., IPR 2014-00687, -00688, -00689, (Feb. 12, 2015).
  • Declaration of Michael S. Triantafyliou, IPR 2014-00687, -00688, -00689, (Mar. 20, 2015).
  • Dowling, “The Dynamics of Towed Flexible Cylinders, Part 1 Neutrally Buoyant Elements,” J. Fluid Mech. 187, pp. 507-532, (Mar. 20, 1987).
  • Paidoussis, “Slender Structures and Axial Flow,” Fluid-Structure Interactions, vol. 1 (1998).
  • Triantafyllou, “Dynamics of Cables, Towing Cables and Mooring Systems,” 23 The shock and Vibration Digest 7, pp. 3-8, (Jul. 1991).
  • Gobat et al., “WHOI Cable: Time Domain Numerical Simulation of Moored and Towed Oceanographic Systems,” Woods Hole Oceanographic Institution (Nov. 1997).
  • Gobat et al., “Generalized-α Time Integration Solutions for Hanging Chain Dynamics,” Journal of Engineering Mechanics pp. 677-687, (Jun. 2002).
  • Transcript of Jury Trial before the Honorable Keith P. Ellison United States District Judge, 4:09-CV-1827 (Jul. 24, 2012).
  • Acquisition Technology Snapshots, 9 TechLink 12 (Dec. 2009).
  • Jury Trial before the Honorable Keith P. Ellison United States District Judge, vol. 5, 4:09-CV-1827 (Jul. 27, 2012).
  • Declaration of Dr. Brian J. Evans, PhD. (Apr. 17, 2014).
  • Declaration of Dr. Brian Evans, PhD., U.S. Pat. No. 7,162,520 B2, (Apr. 17, 2014).
  • Evans, “A Handbook for Seismic Data Acquisition in Exploration,” 7 Geophysical Monograph Series, Society of Exploration Geophysicists (1997).
  • Jury Trial before the Honorable Keith P. Ellison United States District Judge, vol. 6, 4:09-CV-1827 (Jul. 30, 2012).
  • Interlocutory Decision in Opposition Proceedings (Art. 101(3)(a) and 106(2) EPC) Patent No. EP-B-1 850 151, Oct. 9, 2014.
  • Steerable Streamer Benefits, Jan. 13, 2012.
  • Jury Trial before the Honorable Keith P. Ellison United States District Judge, vol. 8, 4:09-CV-1827 (Aug. 1, 2012).
  • Ganz, “Statoil Awards WesternGeco Q-Marine 4D Projects in Norway,” Schlumberger RealtimeNews (2005).
  • Osdal et al., “Mapping the Fluid Front and Pressure Buildup Using 4D Data on Nome Field,” The Leading Edge, pp. 1134-1141 (Sep. 2006).
  • McBarnet, “Interpreting Reservoir Talk,” Offshore Engineer, (Sep. 4, 2003).
  • McBarnet, “Making a Good Recovery,” Offshore Engineer, (Mar. 14, 2005).
  • Ion Technical Forum (ITF) 2010, Book of Abstracts (Sep. 14-16).
  • Capelle et al., “Intelligent Infill for Cost Effective 3D Seismic Marine Acquisitions,” 71st EAGE Conference & Exhibition (Jun. 8-11, 2009).
  • Q-Technology—Moving into the Mainstream, The Journal of Offshore Technology (Jul./Aug. 2003).
  • Decision based on Oral Proceedings held Sep. 17, 2014 in Opposition to EP1850151 (Oct. 15, 2014).
  • Ion's Final Invalidity Contentions, Civil Action No. 4:09-CV-01827 (Feb. 3, 2012).
Patent History
Patent number: 9395458
Type: Grant
Filed: May 5, 2005
Date of Patent: Jul 19, 2016
Patent Publication Number: 20050209783
Assignee: WESTERNGECO, L.L.C. (Houston, TX)
Inventor: Simon Hastings Bittleston (Slependen)
Primary Examiner: Michael Nghiem
Application Number: 11/122,389
Classifications
Current U.S. Class: Having Depth-control Means (114/245)
International Classification: G01C 17/38 (20060101); G01V 1/38 (20060101);